Which property is strongly associated with measuring how much matter is present?

• A. Mass
• B. Colour
• C. Density
• D. Temperature

Answer: (A)

Mass is a measure of how much stuff is present in an object. If you add more material, you increase the number of atoms and molecules, so the mass goes up. That direct link to the amount of matter is why mass is the property most strongly associated with “how much matter” there is—it's the quantity you compare to standard masses on a balance.

Color tells you about light interaction, temperature about how fast particles move, and density is mass per volume (which can vary if the material is packed differently). These other properties don’t directly indicate how much matter you have overall, whereas mass does.